Toothed gearing.



No. 676,234. Patented lune Il, |90I.

` T. HUMP'AGE & H. JAcuUEs.

TUUTHED GEARING.

(Application led Dec. 1, 1900.)

NITED STATES PATENT Prion.

THOMAS l-lUMPAGE AND HERBERT INNES JACQUES, OF BRISTOL, ENGLAND.

TOOTH-ED GEARING.

SPECIFICATION forming part of `:Letters Patent No. 676,234, dated June 11, 1901.

Original application filed December 30, 1897, Serial No. 664,505. Divided and this application filed December 1, 1900. Serial To CLZZ whom, zt may concern:

Beit known that we,THOMAS HUMPAGE and HERBERT INNEs JACQUES, subjects of Her Our invention relates to an improvement` in toothed gearings, the present application being a divisional one on that filed in the United States Patent Office on the 30th day of December, 1897, under Serial No. 664,505.

The gear in question is principally adapted for the reduction of speed from high-speed motors-such as electric, steam, oil, and the like-and as a substitute where the ordinary belting, chain-gear, spur, bevel, or worm gear is used for reducing or increasing the speed of component parts of machines, the gearing in question being simple in construction and operation, strong anddurable, and comparatively inexpensive. l

The invention is the same as that for which Letters Patent were granted to us in Great Britain November 14, 1892, No. 20,542, and is an improvement on the form of construction shown and described in a prior British patent granted to Thomas Humpage,one ofthe applicants herein, on November 9, 1887, No.15,289, and said invention is fully described in the following specification and drawings,in which latter Figure l is a sectional elevation of the irnproved gearing, and Fig. 2 is an end view thereof.

In this form of ourinvention the high-speed shaft P has secured to it a bevel gear-wheel C, the teeth of which are in gearwith a bevel gear-wheel D, capable of freely turning on the arm L of a cross-head G, which is carried by and can turn freely on the shaft P. A bevel-gear E is rigidly secured to the gear D in any suitable way. As shown in the drawings, it is attached to the sleeve 5c, surrounding the arm L and forming part of gear D. The gear D in turn gears with bevel-gear K, having a boss A', carried by `and turning freely on a bushing or sleeve w of the slowspeed shaft a. Such gear K is attachedl by screws y to a casing la, and said casing has a (No model.)

boss .c and is capable ofl rotating freely on a sleeve or bushing c of the high-speed. shaft. The gear E gears with a bevel-gear F, fixed on the slow-speed shaft a. The casing 7c acts as a protection against dirt and may be filled with oil, if desired. Around such casing is a brake-band k2, the ends of which may be drawn together by a rotatable rod s, having a fixed collart bearing on one of the ends and a screw-thread u engaging with the other. t

The action ot' the gear is as follows: The wheel O gears with D, which in turn gears with K, and E gearing with F when the shaft .P rotates C drives D. As, however, the gear K is fixedly held by the brake k2 and cannot rotate, it acts as afulcrumV or fulcrum-wheel, and the wheels D E and cross-head Gare forced to turn, the former on the arm L and the latter on the shaft P. This compound movement of the wheels D E-viz., of rotation on their own axes and bodily around the shaft P^` causes E to drive F in the same direction at a predetermined speed according to the ratio of the gearing. By holding the shaft a and releasing the brake-band k2 the gear K and casing 7c will rotate at yet another speed, and power may be taken off these by a belt or in other ways.

, What we claim is 1. In a gearing, and in combination, a shaft, a wheel fixed thereto, an armed crosshead, means for supporting same so that it may freely revolve, a pair of gear-wheels fixed together and free to revolve as one on the cross-head, one of said wheels engaging the wheel on the shaft, a second shaft, a gearwheel fixed thereto and engaging with the second gear-wheel carried by the cross-head, a further gear-wheel engaging the first gearwheel on the cross-head and free to rotate, and means for holding such'free gear-wheel when it is required to act as a fulcrum-wheel.

2. In a gearing, and in combination, a shaft, a Wheel fixed thereto, an armed crosshead, means for supporting same so that it may freely revolve, a pair of gear-wheels fixed together and free to revolve as one on the cross-head, one of said Wheels engaging the wheel on the shaft, a second shaft, a gear-wheel fixed thereto and engaging with the second ICO gear-wheel carried by the cross-head, a further gear-wheel engaging the rst gear-wheel our hands in the presence of two subscribing on tile cross-head and free no renate, a easing Witnesses. earned by the last-named free gear-wheel and THOMAS HUMPAGE inciosinfr all the gears a brake-bandrfor con- 5 troilingbthe movemenb of such free ger- HERBERT INNES JACQUES' l V Wheel, and means-for tightening and releas- Witnesses: ,1 ing such band. JOHN JAMES DODD,

In testimony whereof We hrwehereunbo set LIONEL EDWARD FELLOWS. 

